Make a helper script for theme renaming

[Adomo-Software]

1. Search for '_s' (inside single quotations) to capture the text domain and replace with: 'megatherium-is-awesome'.
2. Search for s to capture all the functions names and replace with: megatherium_is_awesome_.
3. Search for Text Domain: _s in style.css and replace with: Text Domain: megatherium-is-awesome.
4. Search for _s (with a space before it) to capture DocBlocks and replace with: Megatherium_is_Awesome.
5. Search for _s- to capture prefixed handles and replace with: megatherium-is-awesome-.
6. Search for S (in uppercase) to capture constants and replace with: MEGATHERIUM_IS_AWESOME_.

Its good there there is instructions for this, but wouldn't it be more convenient of we had a script that did that?